TourDeFlex/TourDeFlex_content/remotesamples/DataAccess/server-source-code/flex/samples/contact-custom/ConnectionHelper.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package lcds.samples.contact;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class ConnectionHelper
{
	private String url;
	private static ConnectionHelper instance;

	private ConnectionHelper()
	{
		try {
			Class.forName("org.hsqldb.jdbcDriver");
			url = "jdbc:hsqldb:hsql://localhost:9002/flexdemodb";
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static Connection getConnection() throws SQLException {
		if (instance == null) {
			instance = new ConnectionHelper();
		}
		try {
			return DriverManager.getConnection(instance.url);
		} catch (SQLException e) {
			throw e;
		}
	}
	
	public static void close(Connection connection)
	{
		try {
			if (connection != null) {
				connection.close();
			}
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}
}